On second thought, the easiest thing might be to have the initiator do a catalog lookup. If the DSN exists, change the DISP to OLD, which overwrites the old data, only IF THE DATASET IS OPENED. If the DSN does not exist, change the DISP to NEW. But I'd still prefer that the initiator do a SCRATCH and reallocate the dataset, but do this at step initiation. CA-11 scratches all NEW datasets when it executes (as the first step in the job). So, if the creating job step is flushed, the dataset ceases to exist. Which may or may not be a "good thing".
-- John McKown Systems Engineer IV IT Administrative Services Group HealthMarkets® 9151 Boulevard 26 . N. Richland Hills . TX 76010 (817) 255-3225 phone . [email protected] . www.HealthMarkets.com Confidentiality Notice: This e-mail message may contain confidential or proprietary information. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. HealthMarkets® is the brand name for products underwritten and issued by the insurance subsidiaries of HealthMarkets, Inc. -The Chesapeake Life Insurance Company®, Mid-West National Life Insurance Company of TennesseeSM and The MEGA Life and Health Insurance Company.SM > -----Original Message----- > From: IBM Mainframe Discussion List > [mailto:[email protected]] On Behalf Of McKown, John > Sent: Thursday, February 23, 2012 3:35 PM > To: [email protected] > Subject: Re: Thought: new DISP "status" function > > A good question. The simpliest thing was to have the > INITIATOR write an EOF to the dataset and then make the > access method use MOD. This should be a minimal change. IMO, > the best thing to do would be to have the initiator do a > catalog lookup and scratch the dataset if it exists, then do > NEW processing to redrive SMS and allocation. > > -- > John McKown > Systems Engineer IV > IT > > Administrative Services Group > > HealthMarkets® > > 9151 Boulevard 26 . N. Richland Hills . TX 76010 > (817) 255-3225 phone . > [email protected] . www.HealthMarkets.com > > Confidentiality Notice: This e-mail message may contain > confidential or proprietary information. If you are not the > intended recipient, please contact the sender by reply e-mail > and destroy all copies of the original message. > HealthMarkets® is the brand name for products underwritten > and issued by the insurance subsidiaries of HealthMarkets, > Inc. -The Chesapeake Life Insurance Company®, Mid-West > National Life Insurance Company of TennesseeSM and The MEGA > Life and Health Insurance Company.SM > > > > > -----Original Message----- > > From: IBM Mainframe Discussion List > > [mailto:[email protected]] On Behalf Of Frank Swarbrick > > Sent: Thursday, February 23, 2012 3:30 PM > > To: [email protected] > > Subject: Re: Thought: new DISP "status" function > > > > I like it. > > > > John: What would your expectation be if the characteristics > > of the existing dataset were different than those specified > > on the DD. SPACE and the like. Would this new parm alter > > the characteristics as specified on the DD, or would they say > > the same? > > > > Frank > > > > > > > > > > >________________________________ > > > From: Mike Schwab <[email protected]> > > >To: [email protected] > > >Sent: Thursday, February 23, 2012 1:39 PM > > >Subject: Re: Thought: new DISP "status" function > > > > > >DISP=REUSE or DISP=(REUSE,CATLG) in case of additional volumes. > > > > > >On Thu, Feb 23, 2012 at 2:28 PM, McKown, John > > ><[email protected]> wrote: > > >> We all know that you can specify DISP=OLD|SHR|NEW|MOD for > > a dataset. I just had another wacky thought of a new one that > > I would like. I can't really think of a good, three > > character, value for it. But what it would do is what UNIX > > does with a PATHOPTS=(OTRUNC,OCREAT). It would, like MOD, > > either reuse an existing allocation, or create a new one. > > But, unlike MOD, it would not add to the end, but put an EOF > > at the beginning of the dataset and start writing over the > > old data. What do others think? > > >> > > >> John McKown > > > > > >-- > > >Mike A Schwab, Springfield IL USA > > >Where do Forest Rangers go to get away from it all? > > > > > >------------------------------------------------------------- > > --------- > > >For IBM-MAIN subscribe / signoff / archive access instructions, > > >send email to [email protected] with the message: INFO IBM-MAIN > > > > > > > > > > > > > > ---------------------------------------------------------------------- > > For IBM-MAIN subscribe / signoff / archive access instructions, > > send email to [email protected] with the message: INFO IBM-MAIN > > > > > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
